scholarly journals Ka-Band Diplexer for 5G mmWave Applications in Inverted Microstrip Gap Waveguide Technology

Electronics ◽  
2020 ◽  
Vol 9 (12) ◽  
pp. 2094
Author(s):  
Carlos Sanchez-Cabello ◽  
Luis Fernando Herran ◽  
Eva Rajo-Iglesias
Keyword(s):  
Low Loss ◽  
Magnetic Conductor ◽  
Ka Band ◽  
Metal Plates ◽  
Perfect Magnetic Conductor ◽  
Conductor Surface ◽  
Cost Efficient ◽  
Insertion Losses ◽  
Fifth Order ◽  
24 Ghz

A new cost-efficient, low-loss Ka-band diplexer designed in inverted microstrip gap waveguide technology is presented in this paper. Gap waveguide allows to propagate quasi-TEM modes in the air between two metal plates without the need for contact between them by using periodic metasurfaces. The diplexer is realized by using a bed of nails as AMC (Artificial Magnetic Conductor), first modeled with a PMC (Perfect Magnetic Conductor) surface for design simplification, and two fifth order end-coupled passband filters (BPFs) along with a power divider. The experimental verification confirms that the two channels centered at 24 GHz and 28 GHz with 1 GHz of bandwidth show measured insertion losses of 1.5 dB and 2 dB and 60 dB of isolation between them. A slight shift in frequency is observed in the measurements that can be easily explained by the variation in the permittivity of the substrate.

scholarly journals A corrugated perfect magnetic conductor surface supporting spoof surface magnon polaritons

2014 ◽  
Vol 22 (9) ◽  
pp. 10675 ◽  
Author(s):  
Liang-liang Liu ◽  
Zhuo Li ◽  
Chang-qing Gu ◽  
Ping-ping Ning ◽  
Bing-zheng Xu ◽  
...  
Keyword(s):  
Magnetic Conductor ◽  
Perfect Magnetic Conductor ◽  
Conductor Surface

A novel Ka-band MMIC coupled filter with harmonic suppression

Circuit World ◽  
2020 ◽  
Vol 46 (3) ◽  
pp. 169-173
Author(s):  
Jin Guan ◽  
Min Gong ◽  
Bo Gao
Keyword(s):  
Pass Band ◽  
Wave System ◽  
Harmonic Suppression ◽  
Low Loss ◽  
Coupled Line ◽  
Ka Band ◽  
Content Type ◽  
Harmonic Frequencies ◽  
Full Wave ◽  
On Chip

Purpose A novel Ka-band compact parallel-coupled microstrip bandpass filter with harmonic suppression performance has been designed, implemented and tested on GaAs MMIC. Design/methodology/approach This proposed filter consists of modified coupled-line units with T-shaped open-stubs. Findings The proposed filter with T-shaped open-stubs is valuable in performance with low loss at fundamental frequency, suppression at harmonic frequencies and small size. The simulation is based on full-wave electromagnetic analysis and the measurement is based on chip test. It shows an insertion loss below 1.2 dB, return loss better than 20 dB in the pass band and high than 28 dB suppression at harmonic frequencies. Originality/value This Ka-band MMIC filter with harmonic suppression is attractive for the millimeter-wave system.

scholarly journals Photonic welding points for arbitrary on-chip optical interconnects

Nanophotonics ◽  
2018 ◽  
Vol 7 (10) ◽  
pp. 1679-1686 ◽  
Author(s):  
Zejie Yu ◽  
Yang Ma ◽  
Xiankai Sun
Keyword(s):  
Integrated Circuits ◽  
Low Loss ◽  
Photonic Networks ◽  
New Approach ◽  
Waveguide Bends ◽  
Arbitrary Configuration ◽  
Integration Density ◽  
On Chip ◽  
Insertion Losses ◽  
Further Development

AbstractPhotonic integrated circuits (PICs) are an ideal platform for chip-scale computation and communication. To date, the integration density remains an outstanding problem that limits the further development of PIC-based photonic networks. Achieving low-loss waveguide routing with arbitrary configuration is crucial for both classical and quantum photonic applications. To manipulate light flows on a chip, the conventional wisdom relies on waveguide bends of large bending radii and adiabatic mode converters to avoid insertion losses from radiation leakage and modal mismatch, respectively. However, those structures usually occupy large footprints and thus reduce the integration density. To overcome this difficulty, this work presents a fundamentally new approach to turn light flows arbitrarily within an ultracompact footprint. A type of “photonic welding points” joining two waveguides of an arbitrary intersecting angle has been proposed and experimentally demonstrated. These devices with a footprint of less than 4 μm2can operate in the telecommunication band over a bandwidth of at least 140 nm with an insertion loss of less than 0.5 dB. Their fabrication is compatible with photonic foundry processes and does not introduce additional steps beyond those needed for the waveguides. Therefore, they are suitable for the mass production of PICs and will enhance the integration density to the next level.

Low-loss Ka-band frequency selective subreflector

1991 ◽  
Vol 27 (13) ◽  
pp. 1155 ◽  
Author(s):  
K. Ueno ◽  
H. Kumazawa ◽  
I. Ohtomo
Keyword(s):  
Low Loss ◽  
Band Frequency ◽  
Ka Band ◽  
Frequency Selective

Low-loss High-power KA-band Multipole Multithrow MMIC PIN Switch

2005 ◽  
Author(s):  
M. Daly ◽  
D. Whitefield ◽  
Z. Bogan ◽  
D. Bartle ◽  
J. Delconte
Keyword(s):  
High Power ◽  
Low Loss ◽  
Ka Band
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